zoul

@interface DownloadOperation : NSOperation
{
    NSURLRequest *request;
    NSURLConnection *connection;
    NSMutableData *receivedData;
}

@property(readonly) BOOL isExecuting;
@property(readonly) BOOL isFinished;

esperlu

#!/bin/sh

# Converts a mysqldump file into a Sqlite 3 compatible file. It also extracts the MySQL `KEY xxxxx` from the
# CREATE block and create them in separate commands _after_ all the INSERTs.

# Awk is choosen because it's fast and portable. You can use gawk, original awk or even the lightning fast mawk.
# The mysqldump file is traversed only once.

# Usage: $ ./mysql2sqlite mysqldump-opts db-name | sqlite3 database.sqlite
# Example: $ ./mysql2sqlite --no-data -u root -pMySecretPassWord myDbase | sqlite3 database.sqlite

jjarmoc

# To decode:
#   qp -d string 
# To encode:
#   qp string

alias qpd='perl -MMIME::QuotedPrint -pe '\''$_=MIME::QuotedPrint::decode($_);'\'''
alias qpe='perl -MMIME::QuotedPrint -pe '\''$_=MIME::QuotedPrint::encode($_);'\'''
function qp {
if [[ "$1" = "-d" ]]
then

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

DanHerbert

OBSOLETE

This entire guide is based on an old version of Homebrew/Node and no longer applies. It was only ever intended to fix a specific error message which has since been fixed. I've kept it here for historical purposes, but it should no longer be used. Homebrew maintainers have fixed things and the options mentioned don't exist and won't work.

I still believe it is better to manually install npm separately since having a generic package manager maintain another package manager is a bad idea, but the instructions below don't explain how to do that.

Fixing npm On Mac OS X for Homebrew Users

Installing node through Homebrew can cause problems with npm for globally installed packages. To fix it quickly, use the solution below. An explanation is also included at the end of this document.

r00k

" A minimal vimrc for new vim users to start with.
"
" Referenced here: http://www.benorenstein.com/blog/your-first-vimrc-should-be-nearly-empty/

" Original Author:	 Bram Moolenaar <Bram@vim.org>
" Made more minimal by:  Ben Orenstein
" Last change:	         2012 Jan 20
"
" To use it, copy it to
"     for Unix and OS/2:  ~/.vimrc

sirkkalap

#!/bin/bash

############################################################################
# Note: Special network 192.162.50.3 to use Cisco Anyconnect Split tunnel.
# 
# On OX X host you need to add a line (and file) /etc/exports:
# /Users -mapall=[youruser]:[yourgroup] [boot2dockerip]
# See: https://quip.com/EDYLAAfuup5M (no login needed)
# See also: https://github.com/boot2docker/boot2docker/issues/587#issuecomment-66935011 
# See also: http://support.apple.com/en-us/HT202243

lalyos

vim commands to use pt as grep command

set grepprg=pt\ --nogroup\ --nocolor

crete Pt vim command and map it to \

command -nargs=+ -complete=file -bar Pt silent! grep! <args>|cwindow|redraw!
nnoremap \ :Pt

CMCDragonkai

Job Control in ZSH and Bash

All processes in ZSH/Bash under job control are in 3 states: foregrounded, backgrounded and suspended.

# run command in the foreground
command
# run commend in the background